# Gemini 3.5 Flash API

Gemini 3.5 Flash is Google's earlier-generation Flash model, built for real-world tasks at higher speed and lower cost, and the Gemini model on this rate card that can be pinned to an Australian region; list price $1.50 in / $9.00 out per 1M tokens, provider list as at 1 November 2026.

- Provider: Google
- Model ID: gemini-3.5-flash
- Type: Chat
- Region: AU (can be pinned to Sydney or Melbourne on request)
- Context window: 1,048,576 tokens
- Max output: 65,536 tokens
- Modalities: text, vision, audio, tools, reasoning
- Endpoints: OpenAI Chat Completions https://api.seedrise.ai/v1
- Prices checked: 1 November 2026

## Provider list price

Provider list price as at 1 November 2026, per 1M tokens. AUD at a reference rate of 1 USD = 1.53 AUD; invoices use the rate on the day.

| Token type | USD | AUD |
|---|---:|---:|
| Input | 1.50 | 2.29 |
| Output | 9.00 | 13.77 |
| Cached input | 0.15 | 0.23 |

Your Seedrise rate is quoted per account against this list price. Request a rate card: https://seedrise.ai/contact?model=gemini-3.5-flash

Pinning to an Australian region carries the provider's regional premium on top of the list price shown.

Google has marked Gemini 3.5 Flash deprecated on its developer API in favour of Gemini 3.6 Flash; Seedrise keeps serving it for Australian-region pinning while it remains available, with written notice before any change. Marked AU: can be pinned to Sydney or Melbourne on request.

## Strengths

- Can be pinned to an Australian region on request
- 1,048,576-token input and 65,536-token output limits
- Text, image, video, audio and PDF input
- Thinking, function calling and structured outputs

## Typical use cases

- Australian workloads that need a Gemini model with in-region inference
- Document and image processing for regulated teams
- Multimodal assistants over audio, video and PDFs
- Mid-volume summarisation and extraction

## Quickstart

A first request with curl. Replace sk-... with your Seedrise key.

```bash
curl https://api.seedrise.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"model":"gemini-3.5-flash","messages":[{"role":"user","content":"Hello"}]}'
```

OpenAI SDK, Python:

```python
from openai import OpenAI

client = OpenAI(base_url="https://api.seedrise.ai/v1", api_key="sk-...")

r = client.chat.completions.create(
    model="gemini-3.5-flash",
    messages=[{"role": "user", "content": "Summarise this contract in three bullets."}],
)
print(r.choices[0].message.content)
```

## Where it runs

AU: Can be pinned to Sydney or Melbourne on request. Pinning is set per key, not per request.

## Related models

- [Gemini 4 Argon](https://seedrise.ai/models/gemini-4-argon): US$2.00 input · US$10.00 output per 1M tokens, Global
- [Gemini 3.8 Flash](https://seedrise.ai/models/gemini-3.8-flash): US$0.75 input · US$3.75 output per 1M tokens, Global
- [Gemini 3 Pro Image (Nano Banana Pro)](https://seedrise.ai/models/gemini-3-pro-image): US$0.13 per image · 1K / 2K, Global
- [Gemini 3.1 Flash Image (Nano Banana 2)](https://seedrise.ai/models/gemini-3.1-flash-image): US$0.067 per image · 1K, Global
- [Veo 3.1](https://seedrise.ai/models/veo-3.1): US$0.40 per second · 1080p, audio, US
- [DeepSeek V4 Pro](https://seedrise.ai/models/deepseek-v4-pro): US$1.32 input · US$3.96 output per 1M tokens, Global
- [Grok 4.3](https://seedrise.ai/models/grok-4.3): US$1.25 input · US$2.50 output per 1M tokens, Global
- [Claude Sonnet 5.5](https://seedrise.ai/models/claude-sonnet-5-5): US$2.00 input · US$10.00 output per 1M tokens, AU

## FAQ

### What is the model ID for Gemini 3.5 Flash?

Use gemini-3.5-flash as the model field, with no vendor prefix, on the OpenAI-compatible endpoint at https://api.seedrise.ai/v1. GET /v1/models returns the IDs your key can call.

### How does the Seedrise rate for Gemini 3.5 Flash compare to the list price?

Google's list price as at 1 November 2026 is US$1.50 per 1M input tokens and US$9.00 per 1M output tokens. Seedrise quotes rates per account against the provider's published list price for the same routing. Volume and committed tiers sit below list. Australian-region routing carries the provider's regional premium.

### What is the context window and max output of Gemini 3.5 Flash?

Gemini 3.5 Flash has a context window of 1,048,576 tokens and a maximum output of 65,536 tokens, per the provider documentation checked on 1 November 2026.

### Can Gemini 3.5 Flash run in Australia?

Yes. Gemini 3.5 Flash can be pinned to Sydney or Melbourne on request. Pinning is set per key, not per request, and carries the provider's regional premium.

### Why is Gemini 3.5 Flash still listed when Google has newer Flash models?

Because it can be pinned to an Australian region, which Gemini 3.8 Flash cannot as at 1 November 2026. If residency is not a requirement, Gemini 3.8 Flash on global routing lists lower at $0.75 in / $3.75 out per 1M tokens.

### What does Australian-region pinning cost for Gemini 3.5 Flash?

The Australian-region list price is $1.65 in / $9.90 out per 1M tokens, with cached input at $0.165, against $1.50 / $9.00 on global routing, as at 1 November 2026.

Model names are trademarks of their respective providers.

Source: https://seedrise.ai/models/gemini-3.5-flash